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United States Patent | 6,158,665 |
Moroi ,   et al. | December 12, 2000 |
A viscous fluid type heat generator, which shears viscous fluid for generating heat. The heater includes a rotor located in a heating chamber and viscous fluid accommodated in the heating chamber. The rotor is rotated integrally with a drive shaft by a vehicle engine. The rotor includes a boss for attaching the rotor to the drive shaft. The boss has a double-ringed structure for reinforcing the attachment of the boss to the drive shaft.
Inventors: | Moroi; Takahiro (Kariya, JP); Mori; Hidefumi (Kariya, JP); Takenaka; Kenji (Kariya, JP); Hoshino; Tatsuyuki (Kariya, JP) |
Assignee: | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho (Kariya, JP) |
Appl. No.: | 268432 |
Filed: | March 12, 1999 |
Mar 19, 1998[JP] | 10-069972 |
Current U.S. Class: | 237/12.3R; 126/247 |
Intern'l Class: | B60H 001/02 |
Field of Search: | 237/12.3 R,12.3 B 122/26 126/247 123/142.5 R |
4993377 | Feb., 1991 | Itakura. | |
5799619 | Sep., 1998 | Hoshino et al. | 122/26. |
Foreign Patent Documents | |||
3-98107 | Oct., 1991 | JP. |